github.com/rita33cool1/iot-system-gateway@v0.0.0-20200911033302-e65bde238cc5/docker-engine/internal/test/fakegit/fakegit.go (about)

     1  package fakegit // import "github.com/docker/docker/internal/test/fakegit"
     2  
     3  import (
     4  	"fmt"
     5  	"io/ioutil"
     6  	"net/http"
     7  	"net/http/httptest"
     8  	"os"
     9  	"os/exec"
    10  	"path/filepath"
    11  
    12  	"github.com/docker/docker/internal/test/fakecontext"
    13  	"github.com/docker/docker/internal/test/fakestorage"
    14  	"github.com/gotestyourself/gotestyourself/assert"
    15  )
    16  
    17  type testingT interface {
    18  	assert.TestingT
    19  	logT
    20  	skipT
    21  	Fatal(args ...interface{})
    22  	Fatalf(string, ...interface{})
    23  }
    24  
    25  type logT interface {
    26  	Logf(string, ...interface{})
    27  }
    28  
    29  type skipT interface {
    30  	Skip(reason string)
    31  }
    32  
    33  type gitServer interface {
    34  	URL() string
    35  	Close() error
    36  }
    37  
    38  type localGitServer struct {
    39  	*httptest.Server
    40  }
    41  
    42  func (r *localGitServer) Close() error {
    43  	r.Server.Close()
    44  	return nil
    45  }
    46  
    47  func (r *localGitServer) URL() string {
    48  	return r.Server.URL
    49  }
    50  
    51  // FakeGit is a fake git server
    52  type FakeGit struct {
    53  	root    string
    54  	server  gitServer
    55  	RepoURL string
    56  }
    57  
    58  // Close closes the server, implements Closer interface
    59  func (g *FakeGit) Close() {
    60  	g.server.Close()
    61  	os.RemoveAll(g.root)
    62  }
    63  
    64  // New create a fake git server that can be used for git related tests
    65  func New(c testingT, name string, files map[string]string, enforceLocalServer bool) *FakeGit {
    66  	ctx := fakecontext.New(c, "", fakecontext.WithFiles(files))
    67  	defer ctx.Close()
    68  	curdir, err := os.Getwd()
    69  	if err != nil {
    70  		c.Fatal(err)
    71  	}
    72  	defer os.Chdir(curdir)
    73  
    74  	if output, err := exec.Command("git", "init", ctx.Dir).CombinedOutput(); err != nil {
    75  		c.Fatalf("error trying to init repo: %s (%s)", err, output)
    76  	}
    77  	err = os.Chdir(ctx.Dir)
    78  	if err != nil {
    79  		c.Fatal(err)
    80  	}
    81  	if output, err := exec.Command("git", "config", "user.name", "Fake User").CombinedOutput(); err != nil {
    82  		c.Fatalf("error trying to set 'user.name': %s (%s)", err, output)
    83  	}
    84  	if output, err := exec.Command("git", "config", "user.email", "fake.user@example.com").CombinedOutput(); err != nil {
    85  		c.Fatalf("error trying to set 'user.email': %s (%s)", err, output)
    86  	}
    87  	if output, err := exec.Command("git", "add", "*").CombinedOutput(); err != nil {
    88  		c.Fatalf("error trying to add files to repo: %s (%s)", err, output)
    89  	}
    90  	if output, err := exec.Command("git", "commit", "-a", "-m", "Initial commit").CombinedOutput(); err != nil {
    91  		c.Fatalf("error trying to commit to repo: %s (%s)", err, output)
    92  	}
    93  
    94  	root, err := ioutil.TempDir("", "docker-test-git-repo")
    95  	if err != nil {
    96  		c.Fatal(err)
    97  	}
    98  	repoPath := filepath.Join(root, name+".git")
    99  	if output, err := exec.Command("git", "clone", "--bare", ctx.Dir, repoPath).CombinedOutput(); err != nil {
   100  		os.RemoveAll(root)
   101  		c.Fatalf("error trying to clone --bare: %s (%s)", err, output)
   102  	}
   103  	err = os.Chdir(repoPath)
   104  	if err != nil {
   105  		os.RemoveAll(root)
   106  		c.Fatal(err)
   107  	}
   108  	if output, err := exec.Command("git", "update-server-info").CombinedOutput(); err != nil {
   109  		os.RemoveAll(root)
   110  		c.Fatalf("error trying to git update-server-info: %s (%s)", err, output)
   111  	}
   112  	err = os.Chdir(curdir)
   113  	if err != nil {
   114  		os.RemoveAll(root)
   115  		c.Fatal(err)
   116  	}
   117  
   118  	var server gitServer
   119  	if !enforceLocalServer {
   120  		// use fakeStorage server, which might be local or remote (at test daemon)
   121  		server = fakestorage.New(c, root)
   122  	} else {
   123  		// always start a local http server on CLI test machine
   124  		httpServer := httptest.NewServer(http.FileServer(http.Dir(root)))
   125  		server = &localGitServer{httpServer}
   126  	}
   127  	return &FakeGit{
   128  		root:    root,
   129  		server:  server,
   130  		RepoURL: fmt.Sprintf("%s/%s.git", server.URL(), name),
   131  	}
   132  }